Stovepipe-thimble.



No. 788,200. v PATENTED APR. 25, 1905.

E. PINGH. STOVEPIPE THIMBLE.

1 APPLICATION FILED AUG.12, 1903 Patented A ril 25, 1905.

PATENT OFFICE.

ERNEST FINOH, OF RICHMOND, INDIANA.

STOVEPlPE-THIMBLE.

SPECIFICATION forming part of Letters Patent No. 788,200, dated April25, 1905.

Application filed August 12, 1903. Serial No. 169,258.

" To all whom it may concern.-

Be it known thatI, ERNEST FINoH, a citizen of the United States,residing at Richmond, in the county of Wayne and State of Indiana,

have invented a new and useful Stovepipe- Thimble, of which thefollowing is a specification.

This invention relates to stovepipe-thim- -bles; and it has for itsobject to produce an improved form of thimble which may be easilyapplied and which may be adapted to fit different sizes ofchimney-openings.

The invention consists in certain novel features of construction, ashereinafter shown and described, and specified in the claim.

In the drawings illustrative of the invention, in which correspondingparts are denoted by like designating characters, Figure 1 is asectional view of a portion of a chimney with the improved thimble and apipe with its joint in position therein. Fig. 2 is a perspective view ofthe thimble-sections detached. Fig. 3 is a perspective view of acapemployed to close the flue-opening into the chimney when the flue isremoved.

The improved device consists of a tubular member 10, preferably of brickor other similar material capable of being molded into the requiredshape, but whichmay be made of metal or other suitable material whichwill resist the action of heat. For the purpose of this description themember will be referred to as the primary thimble member. Said member 10is provided with exterior annular channels or grooves 11 and an interiorannular channel or groove 12, with one or more longitudinal grooves orchannels 13 connecting therewith, as shown. Any number of the exteriorchannels 11 may be employed; but generally two will be suflicient, thefunction of these channels being to receive the cement or mortar andassist in holding the thimble in place in the opening in the chimney,which is indicated at 14. The interior diameter of the member 10 willcorrespond to the outside diameter of the largest size of smokepipeswhich will be employed; but to enable the device to be adapted to thediiferent-sized pipes employed upon different forms of stoves,

furnaces, and the like secondary reducingthimbles will be employed.

The pipes generally employed are eight or nine inches in diameter forfurnaces and heating boilers or generators, six inches for ordinaryheating-stoves, and five and four inches for the smaller heating-stovesor special forms of apparatus from which smoke-pipes lead; but it willbe understood that I do not wish to be limited in any manner to thesizes of the pipes to which the improved device is adapted, but reservethe right to its use for all the various sizes of pipes or other similarstructures to which it is applicable.

One of the reducing-thimbles will be provided for each size of pipe, ora plurality of inter-engaging thimbles having interior diameterscorresponding to the pipes will be provided, as preferred.

For the purpose of illustration a single secondary reducing-thimble isshown, having its exterior corresponding to the interior of the primarythimble l0 and its interior corresponding to the pipe-sectionrepresented at 16, as in Fig. 1.

The secondary thimble member is provided with an interior annularchannel or groove 17, having longitudinal channels 18 communicatingtherewith which correspond to the similar channels 12 13 of the member10. Upon the exterior of the member 15 studs or lugs 19 are provided,corresponding in number to the channels 13 in the primary thimble. Whenthe secondary thimble is inserted within the primary thimble, the lugs19 will pass into the longitudinal channels 13, and when the secondarythimble is in position the lugs will enter the channel 12 if thesecondary thimble is rotated within the primary thimble. By this simplemeans the secondary thimble may be locked into engagement with theprimary thimble.

The pipe-section 16 is provided with studs 20, corresponding to thelongitudinal chan nels 18 of the thimble member 15 and adapted to entertherein when the pipe is inserted into the thimble to enable the pipe tobe locked in the thimble when the pipe is rotated, and the studs 20 aremade to enter the channel 17 in the same manner as the studs 19 areentered into the channel 12 in the member 10. Thus it will be seen thatthe pipe-sections will be locked in the thimble, and when a pipe smallerthan the primary thimble is required the reducing-thimble will beemployed. It will also be obvious that provision is made for theemployment of any size of pipe by merely inserting the reducing-thimblesof the proper sizes in sufiicient number.

The end of the pipe-section 16 opposite the studs 20 will be providedwith an internal annular channel 21 and with intersecting longitudinalchannels 22. corresponding in number to the studs 20, and by which meansthe pipesections may be united and locked together by studs 23 on thenext section 24 in substantial] y the same manner as thethimble-sections are united and locked, as will be obvious. By thissimple arrangement the whole structure is firmly united and interlockedand all danger of displacement obviated. It will also be noted that withthe pipe-sections thus united to the chimney and to each other noholding-wire or other similar supports are required to preventlongitudinal movement of the pipes relative to the chimney or eachother, thus greatly simplifying the construction and materiallyincreasing the safety and improving the appearance of the same. The

unsightly stay-wires are thus dispensed with. which is a very desirableresult.

The studs 20 and channels 21 22 will preferably be struck or pressedoutwardly from the bodies of the pipe-sections, as represented.

Any number of the guide-channels 13, 18,

and 22 may be employed; but generally three will be suflicient, asshown.

A cap member will be provided to close the pipe-opening in the chimneywhen the stoves or furnaces are taken down, consisting of a pipe-section24, having a closed outer end 25 and spaced studs 26, corresponding tothe channels 13 or 18, as the case may be, and adapted to be locked inposition in the same manner. as the pipe-sections are secured.

Having thus described the invention, what I claim is- A tubularcylindrical primary thimble having exterior and interior annular groovesformed in the body thereof and interior longitudinal groovescommunicating at their inner ends with the interior annular grooves, incombination with a tubular cylindrical secondary reducing thimble of anexterior diameter equal to the interior diameter of the primary thimbleand of a thickness of body suiticient to efiect the desired reduction,said secondary thimble being provided with exterior lugs to engage theinterior grooves of the primary thimble and with an interior annulargroove formed in the body thereof, and with longitudinal grooveslikewise formed in the body thereof and communicating at their innerends with said annular groove.

In testimony that I claim the foregoing as my own I have hereto aflixedmy signature in the presence of two witnesses.

ERNEST FINGH.

Witnesses:

J. E. MOORE, M. B. TAYLOR.

